Heralded W state preparation using laser-designed super-atoms

Abstract

We propose a scheme for preparing an ensemble of atoms in a maximally entangled W state by exploiting the Rydberg blockade effect. The success of our protocol is indicated by the detection of an ion, which thus serves as a herald for successful entangled state preparation. The fidelity of the preparation scheme is independent of the number of atoms in the ensemble. Therefore, a small cloud of atoms in a dipole trap randomly loaded from a background gas can be reliably prepared in a maximally entangled state despite of atom number fluctuations.

7 pages, 3 figures

References in corpus (20)

• Scalable multi-particle entanglement of trapped ions
• Single-atom trapping in holographic 2D arrays of microtraps with arbitrary geometries
• Experimental entanglement of a six-photon symmetric Dicke state
• Coherent Excitation Transfer in a Spin Chain of Three Rydberg Atoms
• Detecting multiparticle entanglement of Dicke states
• Spin squeezing and entanglement
• Entanglement with Negative Wigner Function of Three Thousand Atoms Heralded by One Photon
• High accuracy correction of blackbody radiation shift in an optical lattice clock
• Mesoscopic Rydberg-blockaded ensembles in the superatom regime and beyond
• Experimental characterization of singlet scattering channels in long-range Rydberg molecules
• Two-Atom Rydberg Blockade using Direct 6S to nP Excitation
• Robust quantum logic in neutral atoms via adiabatic Rydberg dressing
• Long-range Rydberg-Rydberg interactions in calcium, strontium and ytterbium
• Two-electron excitation of an interacting cold Rydberg gas
• Stimulated adiabatic passage in a dissipative Rydberg superatom
• Opto-Nanomechanics Strongly Coupled to a Rydberg Superatom: Coherent vs. Incoherent Dynamics
• Multichannel Quantum Defect Theory of Strontium Rydberg Series
• Nonlocality of $W$ and Dicke states subject to losses
• Scanning electron microscopy of Rydberg-excited Bose-Einstein condensates
• Jaynes-Cummings dynamics in mesoscopic ensembles of Rydberg-blockaded atoms

Cited by in corpus (3)

• Rydberg superatoms: An artificial quantum system for quantum information processing and quantum optics
• Heralded atomic nonadiabatic holonomic quantum computation with Rydberg blockade
• Deterministic entanglement generation between a pair of atoms on different Rydberg states via chirped adiabatic passage